1-4x[-5x(x-2)]=21

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Solution for 1-4x[-5x(x-2)]=21 equation: 


Simplifying
1 + -4x[-5x(x + -2)] = 21

Reorder the terms:
1 + -4x[-5x(-2 + x)] = 21
1 + -4x[(-2 * -5x + x * -5x)] = 21
1 + -4x[(10x + -5x2)] = 21
1 + [10x * -4x + -5x2 * -4x] = 21
1 + [-40x2 + 20x3] = 21

Solving
1 + -40x2 + 20x3 = 21

Solving for variable 'x'.

Reorder the terms:
1 + -21 + -40x2 + 20x3 = 21 + -21

Combine like terms: 1 + -21 = -20
-20 + -40x2 + 20x3 = 21 + -21

Combine like terms: 21 + -21 = 0
-20 + -40x2 + 20x3 = 0

Factor out the Greatest Common Factor (GCF), '20'.
20(-1 + -2x2 + x3) = 0

Ignore the factor 20.

Subproblem 1
Set the factor '(-1 + -2x2 + x3)' equal to zero and attempt to solve:

Simplifying
-1 + -2x2 + x3 = 0

Solving
-1 + -2x2 + x3 = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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